package com.wzy.netty.core.codec;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

/**
 * 描述
 * 创建人    Wzy
 * 创建时间: 2020-05-21  15:06
 */
public class NettyClientHandler extends ChannelInboundHandlerAdapter {
    /*
     * 当通道就绪就会触发该方法
     * */
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        //发送一个student对象
        StudentPOJO.Student student = StudentPOJO.Student.newBuilder().setId(4).setName("豹子头 林冲").build();
        ctx.writeAndFlush(student);
    }

    /*当通道有读取时间就会触发*/

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf buf = (ByteBuf) msg;
        System.out.println("服务器回复的消息:" + buf.toString(CharsetUtil.UTF_8));
        System.out.println("服务器的地址:" + ctx.channel().remoteAddress());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}
